Wall lamp



FIG. 1 is a perspective view of a wall lamp showing my new design;

FIG. 2 is a left side elevational view thereof, the right side elevational view being a mirror image thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a top plan view thereof; and,

FIG. 6 is a bottom plan view thereof.

The broken lines are shown for illustrative purposes only. 

The ornamental design for a wall lamp, as shown and described. 